explain working of differential protection for a transformer?

Answer Posted / k.prakashchandra

The CTs and their connections are so chosen that currents in
primary and secondary of each corresponding phase balance
each other, under normal working conditions.

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

can u describe the method used for protection of transmission line.

1623


In a Impedance Based Distance Relay (Quad Characteristics) - Could there be two different Line Angle(RCA) for Ph-Ph & Ph-Gnd? If So Kindly Let me Know.. Where, What are the advantages of the same?

965


explain all the classes with example

1504


rajha power sector details

1546


Explain the fundamental difference between emf (electro motive force) and pd (potential difference) ?

644






What will be electrical cost per sqft for IT building (basebuild and fitout)and for residential township?

1463


How many types of faults are there in 3 phase power system?

643


Is better to supply the voltage for static exciter from the auxiliary power source or from the SG terminals? And why?

1497


How will calculate losses in an multi core Aluminium LT cable of different sizes & upto what length we can use a LT Cable ?

1679


234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

1748


please write motor, transformer, Generator setting, fault level calculation of Tr.etc

1524


What is the range of the stator resistance of 3 phase induction motor?

1459


What are the classifications of oscillators?

684


What is the general system requirement of alternator?

1332


1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?

2385